Mandrel



Dec. 11 1923.

N. E; GOUGH MANDREL Filed Sent. 21. 1921 Patented Dec. 11, 1923.

UNITED STATES NED EDGAR GOUGH, OF SEATTLE, WASHINGTON.

MANDREL.

Application filed September 21, 1921. Serial No. 502,224.

T all whom it may concern:

Be it known that I, NED EDGAR GDUGH, a citizen of the United States, and a resident of the city of Seattle, county of King, State a of lVashington, have invented certain new and useful Improvements in Mandrels, of which the following is a specification.

This invention relates to inandrels, and more particularly to mandrels of that charr0 acter adapted to be used for finishing and fitting of connecting rod and crank shaft bearings and bushings for motor vehicle engines.

It is the principal object of the invention it to provide mandrels of different sizes and character, for the fitting of bearings and bushings, together with a holder for the same, and comprising improved means whereby the mandrels may be removably 2c fixed within the holder.

Another object of the invention is to provide mandrels and a holding device therefor which may be used for testing the alinement of connecting rod assemblies.

Other objects of the invention reside in the details of construction of the parts and in their combination.

In accomplishing these and other objects of the invention, I have provided the improved details of construction, the preferred forms of which are illustrated in the accompanying drawings, wherein- Figure 1 is a perspective view illustrating the manner of securing the mandrel holding device within a vise in position to be used, and showing a mandrel and its locking pin removed from the holding device.

Figure 2 is a side view of the mandrel and its holder, in assembled relation.

Figure 3 is an end view of the same, showing in dotted lines the application of a bushing to the mandrel for fitting.

Figure 42 is a side view illustrating the use of the device for testing the alinement of the connecting rod assembly.

Figure 5 is a side view of a mandrel of an alternative type.

Referring more in detail to the drawings- 1 designates mandrel of a preferred type, and 2 a holder therefor. The mandrel consists of a short cylindrical body portion rovided at one end with a co-axially exten ing shank 3 which may be cylindrical or tapered, and which is fitted removably within a correspondingly shaped socket 4 in the end of CJI of the holder, so that the mandrel will be held thereby rigidly in position.

The preferred type of holder 2 consists of a single bar which is square in cross section and which has plane opposite surfaces parallel to each other. The socket 4 is located centrally in one end of the holder and a smaller bore 6 extends longitudinally through the bar and opens into the base end of the socket, through which a pin, or rod, may be extended to drive the mandrel out should it become fixed within the socket. Transversely through the bar is a bore 7 wherein a tapered pin, as shown at 8, may be extended to lock the mandrel in position. This latter bore passes through one side of the socket 4 and the shank of the mandrel is provided with a transverse notch 9 for re ceiving it.

In Fig. 5, I have illustrated an alternative construction wherein the body of the mandrel is provided, at its opposite ends, with flanges to which bearings of a specified length may be fitted.

Assuming that the device is so constructed and assembled as described, in "using the device the holder is clamped horizontally in the vise as is illustrated in Figure 1,and a mandrel of a desired size and type is mounted therein; the size depending upon the size of the hearing or bushing which is to be fitted.

It is customary, in fitting bearings and bushings for the crank shaft or crank pins of the engine, to fit them directly to the part to which they are to be applied, and this requires that the engine be partly or entirely disassembled, so that access may be had to these parts. With the present device, by selecting a mandrel of the same size or dlameter as the part to which the bushing is to be fitted, the bushing may then be fitted to this mandrel and later applied to the engine, thereby eliminating the necessity of working beneath the engine while it is in the vehicle or removing the engine from the frame.

The alinement of the connecting rod assembly may be tested, as illustrated in Fig ure 4, by placing a square upon the holding bar 2, so that one arm thereof will extend along the surafce of the piston.

Having thus described my invention, what I claim as new therein and desire to secure by Letters-Patent, is:

A device of the character described, comprising in combination, a supporting bar having plane and parallel opposite surfaces the transverse bore of the supporting bar, and having a socket at the end thereof and a and a locking pin appiled removably Within transverse bore through the socket, a mansaid bore to secure the mandrel functionally l0 drel having a supporting shank extendable in aosition.

5 Within the socket to support the mandrel coigned at Seattle, \Veshington, this 16th axially alined with the her, said shank havday of September, 1921. .ing a notch therein adapted to register with NED EDGAR GOUGH. 

